Introduction to Tongtian Hall: It is the highest-level building in the Taihao Mausoleum ancient building complex. It was built in the Ming Dynasty. It is five rooms wide, three rooms deep, and has a single eaves on the top of the mountain. In the hall, there is a holy statue of Taihao Fuxi: born with two horns, kind eyebrows and kind eyes. He is smart and wise, wearing leaves and animal skins around his waist, barefoot and bare belly, holding the innate Bagua Tai Chi diagram in his hand, which makes people feel awe. The platform in front of the palace has been the place for the grand sacrificial ceremonies of past dynasties. No matter princes, generals, ministers, three religions, or hundreds of schools of thought, all people look at it and prostrate themselves in worship.